Fully Anonymous Data Access Provision and Attribute based Encryption Scheme for Efficient Cloud Data Privacy

Abstract

Cloud computing is a service based distributed computing where the users can access required services on pay per use basis. Cloud enables users to store data and provides on demand accessibility. As the cloud service providers and cloud users are from different trust domains so security concerns rise out of it. Sharing of resources is the key idea behind the cloud which makes access control, a critical issue in cloud computing. Different configurations for attribute based encryption were used for cloud storage security. The work primarily deals with information protection and the access control. The current work is a semi anonymous privilege control scheme called Anony Control which provides identity and data privacy of user. Also Anony Control-F that fully prevents the information leakage of user and achieves the full anonymity has been presented. Here multiple authorities provide attributes in such a way that each authority will know only one attribute. This is called as multi authority cipher text policy attribute based encryption (CP-ABE). Which guarantees the user’s personal information privacy and tolerates collusion attacks on attribute authorities.